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What is the true shape of Andromeda Galaxy?

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The Andromeda Galaxy, aka Messier 31, M31, or NGC 224, is a spiral galaxy. It is approximately 780,000 parsecs, 2,544,020 light years, from Earth and the nearest major galaxy to the Milky Way. This page may be out of date. read more

The Andromeda Galaxy's mass is estimated to be around 1.76 times that of the Milky Way Galaxy (~0.8-1.5 × 10 12 solar masses vs the Milky Way's 8.5 × 10 11 solar masses). The Milky Way and Andromeda galaxies are expected to collide in ~4.5 billion years, merging to form a giant elliptical galaxy or a large disc galaxy. read more

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